package leetcode;

/**
 * 描述:509. 斐波那契数
 *
 * @author Madison You
 * @created 23:15
 */
public class Easy_509_Fib {
    public static void main(String[] args) {
        new Easy_509_Fib().fib(2);
    }

    public int fib(int n) {
        if (n == 0) return 0;
        int[] dp = new int[n];
        dp[0] = 0;
        dp[1] = 1;
        for(int i = 2 ; i <= n ; i ++) {
            dp[i] = dp[i - 1] + dp[i - 2];
        }
        return dp[n];
    }
}
